WinBastion MailBastion
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Coming soon Windows

MailBastion

Back up, search and clean up mailboxes, offline.

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What it is

MailBastion in a paragraph

MailBastion copies your mailboxes out of Outlook, Gmail, IMAP accounts and old PST files into a form you control: MBOX, EML or PDF. Then it searches across all of them, pulls out attachments in bulk, and finds the duplicates and the ten-year-old newsletters that are filling your quota.

Planned for the first release

  • Back up IMAP, Gmail, Outlook.com and Exchange mailboxes to your disk
  • Open, export and convert PST, OST, MBOX and EML
  • Search every mailbox at once, including inside attachments
  • Extract all attachments to folders, by sender or date
  • Find duplicates and bulk senders; delete or archive with a review step
  • Credentials stay on the PC; nothing is copied to a third-party server

This page describes what we intend to build. There is nothing to download yet, and we do not take pre-orders. When MailBastion is ready it will be listed as available on the products page. Have a job in mind for it? Tell us through the feedback form.

Same rules as every Bastion

What MailBastion will and will not do

Offline firstWorks with the network cable unplugged. Any connection it makes is listed and optional.
Every change undoableAnything it changes is journaled with its previous state and can be put back.
No telemetryNo account, no analytics, no crash reporting. Nothing about you leaves the PC.
Pay whatever you wantFree to use. If it helps you, tip what you think it is worth. No paywalls, no feature ever switched off.
Windows 11 Home includedTested on Home edition first; anything that only works on Pro is labelled.

Want to know when MailBastion is ready?

Send an email and we will reply once, when it ships. No list, no newsletter, nothing else. If you have a job in mind that MailBastion should handle, tell us in the same message or through the feedback form. Every product is free and funded by tips from the people it helped.

Email hello@winbastion.com